package com.lrh.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.lrh.reggie.common.R;
import com.lrh.reggie.entity.User;
import com.lrh.reggie.mapper.UserMapper;
import com.lrh.reggie.service.UserService;
import com.lrh.reggie.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;


    /**
     * 发送手机短信验证码
     * @param user
     * @param session
     */
    @Override
    public void sendMsg(User user, HttpSession session) {
        //获取手机号
        String phone = user.getPhone();

        if(StringUtils.isNotEmpty(phone)) {
            //生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();

            //模拟向手机（控制台）发送验证码
//            System.out.println(code);
            log.info("code={}", code);

            //调用阿里云提供的短信服务API完成发送短信
//            SMSUtils.sendMessage("瑞吉外卖","",phone,code);

            //需要将生成的验证码保存到Session
            session.setAttribute(phone, code);

            //将生成的验证码缓存到Redis中，并且设置有效期为5分钟
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);
        }
    }

    /**
     * 移动端用户登录
     * @param map
     * @param session
     * @return
     */
    @Override
    public User login(Map map, HttpSession session) {
        //获取手机号
        String phone = map.get("phone").toString();

        //获取验证码
        String code = map.get("code").toString();

        //从Session中获取保存的验证码
//        Object codeInSession = session.getAttribute(phone);

        //从Redis中获取缓存的验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);

        //进行验证码的比对（页面提交的验证码和Session中保存的验证码比对）
        if (codeInSession != null && codeInSession.equals(code)) {
            //如果能够比对成功，说明登录成功

            LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(User::getPhone, phone);

            User user = userService.getOne(queryWrapper);
            if (user == null) {
                //判断当前手机号对应的用户是否为新用户，如果是新用户就自动完成注册
                user = new User();
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }

            //登录成功后需要将user的id放到session中
            session.setAttribute("user", user.getId());

            //如果用户登陆成功，删除Redis中缓存的验证码
            redisTemplate.delete(phone);

            return user;
        }
        return null;
    }
}
